div#container{
    margin: 0 auto;
    height: 20em;
    min-width: 20em;
    max-width: 30em;
}

div.hot-info{
    text-align: center;
}

.panel.hot-blog{
    border-color:#25c588;
}

.panel.hot-blog .panel-heading{
    background-color: #25c588;
    color: #fff;
}